This Is Where Earth Ends And Space Begins

There has been much debate in the scientific community about where exactly space begins. Today, the Kármán Line recognized that boundary-it sits at 100 kilometers (62 miles) above sea level. The line is named after Theodore von Kármán, a Hungarian-American engineer and physicist. However, any NASA test pilot or astronaut who crosses an altitude of roughly 80 kilometers (50 miles) is awarded their astronaut wings.